BODENCHUK, V. V.; SERDYUK, A. S. Exact Values of Kolmogorov Widths for the Classes of Analytic Functions. I. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 6, p. 719–738, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2017. Acesso em: 5 dec. 2025.